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<a name="boost.signals2.dummy_mutex"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle">Class dummy_mutex</span></h2>
<p>boost::signals2::dummy_mutex — Fake mutex which does nothing.</p>
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<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: &lt;<a class="link" href="../../signals2/reference.html#header.boost.signals2.dummy_mutex_hpp" title="Header &lt;boost/signals2/dummy_mutex.hpp&gt;">boost/signals2/dummy_mutex.hpp</a>&gt;

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<span class="keyword">class</span> <a class="link" href="dummy_mutex.html" title="Class dummy_mutex">dummy_mutex</a> <span class="special">:</span> <span class="keyword">public</span> noncopyable <span class="special">{</span>
<span class="keyword">public</span><span class="special">:</span>
  <span class="keyword">void</span> <a class="link" href="dummy_mutex.html#id-1_3_37_6_4_3_1_1_4_1-bb"><span class="identifier">lock</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">bool</span> <a class="link" href="dummy_mutex.html#id-1_3_37_6_4_3_1_1_4_2-bb"><span class="identifier">try_lock</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">void</span> <a class="link" href="dummy_mutex.html#id-1_3_37_6_4_3_1_1_4_3-bb"><span class="identifier">unlock</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
<span class="special">}</span><span class="special">;</span></pre></div>
<div class="refsect1">
<a name="id-1.3.37.6.5.3.4"></a><h2>Description</h2>
<p>You may wish to use the <code class="computeroutput">dummy_mutex</code> class for the <code class="computeroutput">Mutex</code>
          template type of your signals if you are not concerned about thread safety.
          This may give slightly faster
          performance, since <code class="computeroutput">dummy_mutex</code> performs no actual locking.
          </p>
<pre class="literallayout"><span class="keyword">void</span> <a name="id-1_3_37_6_4_3_1_1_4_1-bb"></a><span class="identifier">lock</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
<p>No effect.
              </p>
<pre class="literallayout"><span class="keyword">bool</span> <a name="id-1_3_37_6_4_3_1_1_4_2-bb"></a><span class="identifier">try_lock</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
<p>No effect.
              </p>
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<td><p><span class="term">Returns:</span></p></td>
<td><p><code class="computeroutput">true</code>.</p></td>
</tr></tbody>
</table></div>
<pre class="literallayout"><span class="keyword">void</span> <a name="id-1_3_37_6_4_3_1_1_4_3-bb"></a><span class="identifier">unlock</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
<p>No effect.
              </p>
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<td align="right"><div class="copyright-footer">Copyright © 2001-2004 Douglas Gregor<br>Copyright © 2007-2009 Frank Mori Hess<p>Distributed under the Boost
    Software License, Version 1.0. (See accompanying file
    <code class="filename">LICENSE_1_0.txt</code> or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)</p>
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